Poor ISO 4406 result
A high or rising cleanliness code calls for a representative sample and a review of where particles are entering the system.
NATCOM measures particle and water contamination, selects the filtration setup for your hydraulic system and verifies the result after treatment. On-site service across Egypt and Saudi Arabia.
Hydraulic oil care
Solid particles and water can interfere with close-clearance hydraulic components, but a symptom alone does not define the cleanup. NATCOM starts with the oil grade, reservoir, system duty and a representative sample.
The result sets the filtration method and the target. The existing oil can then circulate through a temporary external loop, often called offline filtration, with particle and water measurements repeated after treatment.
If testing points to degraded oil chemistry or varnish, filtration alone may not solve the problem.
These signs justify sampling. The particle and water results determine whether filtration is the right response.
A high or rising cleanliness code calls for a representative sample and a review of where particles are entering the system.
Particles, water and deposits can all affect close-clearance valves. The oil result helps separate those causes before treatment.
Short filter life can point to continued ingress, contamination already held in the system or a filter setup that does not suit the duty.
Visible haze, free water or a high measured water level needs a compatible removal method and a check for the source of ingress.
How NATCOM handles it
The starting condition sets the target and the equipment. A follow-up sample shows what changed.
Record the oil grade, reservoir volume, viscosity, temperature, connection points, operating duty and equipment requirements.
Take a representative sample and establish the ISO 4406 cleanliness code and water level. Add oil-health tests when needed.
Select the flow, filter media and water-removal method, then circulate the oil outside the main hydraulic circuit where the site allows it.
Sample again from an agreed point and compare the same measurements with the target set before treatment.
ISO 4406 is a three-number code used to report particle cleanliness. Water is measured separately, often in parts per million. Oil-health tests are also needed when the question is whether the oil remains fit for use.
Matched to the system
Oil type, viscosity, reservoir volume, contamination, connection points and the required result all affect the filtration setup.
Portable offline equipment removes solid contamination from hydraulic oil. The oil, viscosity, starting condition and target determine the setup.
Compatible equipment can remove free and entrained water from hydraulic oil. NATCOM checks the starting water condition before selecting the method.
On-site particle measurement establishes the starting cleanliness, follows the cleanup and confirms the result with the same reporting method.
Need permanent monitoring or filtration equipment instead of a managed cleanup?
View Oil SystemsDocumented Filtertechnik customer case
Filtertechnik's published account covers about 900 litres of ISO VG 32 oil serving hydraulic press systems at Commonwealth Steel in Indonesia. The initial oil condition was ISO 21/19/16 with 800 ppm water.
PT Kelmer used two HIPPO filter pots in parallel as a portable external loop. Filtertechnik reports that the oil reached ISO 13/12/8 and 50 ppm water after a two-day cleanup.
21/19/16 → 13/12/8
ISO 4406 cleanliness code
800 → 50 ppm
water in the oil
900 L
reported oil volume
2 days
reported cleanup time
Figures and timeline are reported by Filtertechnik for this Indonesian customer project.
View SourceChoose the right response
Similar hydraulic symptoms can come from different oil problems. The test result separates the work filtration can do from the work it cannot.
Use particle filtration
Set the target from the hydraulic equipment requirement and the measured ISO 4406 code.
Use a suitable water-removal method
Confirm the water condition and oil compatibility before selecting the equipment.
Test before deciding
Oxidation, viscosity change or depleted additives may require another treatment or an oil change.
Use a varnish-specific plan
Conventional particle filtration does not necessarily remove soluble varnish from the system.
If the cause is unclear, start with NATCOM's oil analysis services. For sticky valves and deposit evidence, read the hydraulic oil varnish case review.
Where the service fits
NATCOM confirms the oil, access points and required condition before selecting an offline filtration or water-removal setup.
Press and forming systems where oil cleanliness affects pumps, valves and close-clearance controls.
Central and machine-mounted reservoirs that need a defined particle and water target.
Control systems where a measured oil condition is needed before contamination is blamed for erratic response.
Pumps, valves and manifolds served by oil that can be treated through a suitable external connection.
Need a broader oil-filtration scope covering gearboxes, turbines or other industrial oils? Review NATCOM's industrial oil filtration service.
Regional delivery
NATCOM uses the same measure, filter and verify method in both markets. Each job is scoped for the hydraulic system and site conditions.
Cairo office
In Egypt, NATCOM is ExxonMobil Egypt's sole service partner for services including solid-particle filtration, water removal and oil sampling.
Al Khobar office
NATCOM scopes Saudi hydraulic oil filtration and water-removal projects from Al Khobar. The team confirms the oil, reservoir, treatment target, access and equipment setup before mobilization.
Share the oil grade, reservoir volume, latest particle and water results, target cleanliness, symptoms and available connection points. NATCOM will define the measurement and filtration scope.
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